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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration( /L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) {feet) (feet) Benzene Toluene benzene X lenes TPH-g MTBE <br /> SW2 05/08/97 -- <br /> SW2 08/26/97 -- <br /> SW2 11/11/97 -- <br /> SW2 03/03/98 <br /> SW2 05/20/98 -- -- -- -- __ -- <br /> SW2 08/19/98 -- <br /> SW2 11/18/98 -- <br /> SW2 03/30/99 <br /> SW2 05/05/99 <br /> SW2 08/20/99 -- -- -- - -- __ - <br /> SW2 12/06/99 -- <br /> SW2 02/29/00 -- -- -- -- -- -- -- __ <br /> SW2 05/16/00 -- -- -- _- -- <br /> SW2 09/11/00 <br /> SW2 12/13/00 <br /> -- -- -- -- -- <br /> SW2 03/08/01 <br /> SW2 06/21/01SW2 09/20/01 -- -- __ -- -- -- -- -- -- <br /> SW2 12/04/01 753 1850 -1097 000 <br /> SW2 03/05/02 7 53 -- __ __ <br /> SW2 06/11/02 753 -- -- _ -- -- -- -- -- ,- <br /> V 1 05/02/91 857 3174 -23 17 000 20,000 49,000 4,700 25,000 130,000 <br /> V1 07/16-17/91 857 3270 -2413 000 14,000 44,000 3,000 15,000 170,000 <br /> VI 10/15/91 8 57 3325 -24 68 000 18,000 51,000 4,200 23,000 200,000 -- <br /> V1 01/28/92 8 57 31 51 -2294 Sheen 20,000 58,000 2,400 23,000 150,000 <br /> VI 04/30/92 857 31 12 -2255 000 15,000 43,000 3,000 18,000 130,000 -- <br /> VI 08/13/92 8 57 33 17 -2460 000 12,000 44,000 3,600 20,000 180,000 <br /> VI 10/08/92 857 3376 -25 18 001 Not sampled-LPH <br /> VI 02/23/93 857 3047 -21 90 000 9,800 19,000 3,700 18,000 100,000 <br /> VI 05/18/93 857 -- __ -- <br /> VI <br /> _V1 08122(93 8 57 2970 -21 13 000 <br /> g Iprojects\73942ItnasterlwplgO6O2U942gw xls Page 34 or 43 <br />